Method for forming parallel faces on the ends or rails and other objects to be butt-welded.



H. GOLDSCHMIDT & W. BREWITT.

PARALLEL FACES ON THE ENDS OF RAILS AND OTHER OBJECTS T0 BE'BUTT WELDED.

APPLICATION FILED SEPT.26. I913. 1,154,918.

1 METHOD FOR FORMING Patented Sept. 28, 1915.

Hans

NEED i connscnninr ann wnmnn nianwrr'r, or nssnn-on-rnn-nunn, summarAbSIGNGRS TO GOLDSCHMIZDT TIflElFtMIT CUMEANY, OF NEW YORK, N. E il.CORPQ- narrow or n'nw anaasnr,

METHQID F03 ZEQZitT/IING K ACIES 9N THE ENDS DIE RAILS AND (STEER 018dECTS V T BUTT-WELDLED.

lglficl tllldi Patented seat. as, aura Application filed September '26,1913. Serial 230.791321.

T 0 all whom it may concern:

Be it known that. we, HANs GoLoscHr/Im'r fi-DCl- /VALTER Bnnwrr'r,subjects of the King of Prussia, and residents, of Essen-on-the- Ruhr,in the Province of the/Blaine Germany, have invented a new or ImprovedMethodior Forming Parallel F aces on the Ends of Rails and other Objectstobe' Butt 1 lVelded, of which the following is an exact specificationHeretofore tools or devices for simultaneously facing the ends of railsor the like in order to produce parallelism and brightness of the endfaces of the rails could only be used in connection with such. rails aswere movable 1n thed1rect1on of their longitudinal axis by means of aclamping device or similar apparatus. Now, rails already laid inpavedroads are immovable and the use of a facing tool enlarges the gapexisting between the end faces of the rails, The width of a welded jointmust not exceed a certainlimit, and the quality of the joint is bestwhen the gap between the pieces to be joined is as narrow as possible.Attempts have been made to reduce to a minimum the width of the gapwhich results after having used the facing tool as for example by usinga rotary saw, ordisk cutter which simultaneously shaped the end faces ofthe rails. Dificulty has been exprising perienced, however, when usingdisk cutters.

for facing hard steel rails, owing to the fact that it was not alwayspossible to keep the tool'up to the work on both sides the re- Vparallelism by operating with a cutter in a new and improved manner ashereinafter.

described. 7

Usually vertical surfaces are operated upon by cutters which arerighthanded or lefthanded according to the direction in which they arepressed for performing the operation. Such cutters must be very strongand rigid in order to keep them to the work and they cannot be used in anarrow gap on account of their special shape, their dimensions and theoblique positionwhich it is necessary they should have. Now, ac-

cording to "this invention a pointed vertical tool is employed whichdoes not operate upon the work with its p0int-but by the in clinedcutting edges which meet at the point, these cutting edges beingsimultaneously active upon the opposed faces of the two rail ends. Thesame effect is obtained whether the cutting tool has a movement in astraight line or over an arc. The shankof' this tool can'ibe made verythin because the tool on account of its lateral guidance does not'receive any appreciable lateral pressure in one direction or the other.The ends of rails, such as are employed for butt-welding, are usuallyfaced; before they are laid, in such a manner that the faces are atrightangles to the longitudinal axis of the rails, and it follows thatonly a very thin layer has to be removed by the tool in order to obtainbright and parallel surfaces.

The accompanying drawing illustrates to an enlarged scale a. suitablecutting-tool by way of example and the manner of working of this cuttingtool will be hereinafter more particularly described and ascertained.

Figure 1 is a front elevation of the cutting-tool in the act ofoperating upon two adjacent surfaces to be butt jointed. Fig. 2

is a side view of the cutting tool and Fig. 3

is a section along the line a:-y of Figs. 1 and 2. I

The tool consists of. a cutting head a, a thin neck portion at forentering the narrow gap between the'rail' ends c and a thick shankportion f for insertion in the tool holder. The relative dimensions ofthese parts are somewhat exaggerated in order to clearly show the way inwhich the cutting head operates. The cutting head s has a maximum widthat 5 Z) and the width is gradually reduced to the point a so thatinclined cutting edges a b and a b are formed.

The tool is adapted to be fixed in a holder mounted on guidesby means ofwhich the tool can be reciprocated, transversely of the rails and can bekept accurately in the same path during the operation of facingthe railends from head to foot, the edges a b a I) commencing their cut at thetread surface so that it keeps evenly andfuniformly incontarct with'thetwo surfaces operated upon.

For the reason that the cutting tool does not cut with its point, it isnot material to the present invention how the point is shaped. By thismeans it is possible to produce a narrow space between the ends of'rails which are already in position and toface the end surfaces to exactparallelism and to a high degree of brightness the result being onewhich has not been achieved here- The space between the rail endstofore. prepared inthe manner above described can be filled up with awelding piece and elded I by an aluminothermicpro'cess.

Having now particularly described and ascertained the nature of our saidinvention and in what manner the same is to be performed, We declarethat What 'We'claim is:

1. The method of forming parallel faces on adjacent ends of rails andother objects to be united, consisting in reciprocating a doubleinclined edge cutting tool between the surfaces to be united and feedingthe'tool during its reciprocation through said objects until thesurfaces are cut to substantial parallelism.

Themethod of forming parallel faces Jon adjacent ends of rails andother-objects to be united, consisting in reciprocating a doubleinclined edge cutting tool in a straight line between the surfaces to beunited and feeding the tool during its reciprocation through saidobjects until the surfaces are cut to substantial parallelism.

HANS GOLDSCHMIDT. [1 s.]

WALTER BREWITT. [L. s.]

Witnesses:

HELEN N Urea, ALBERT'NUFER;

